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DictionarytriadGroup of three
noun

triad

TRY-ad/ˈtraɪæd/

A group of three related elements.

The three linked rings form a simple triad.

Three interlocking rings form one clearly connected triangular arrangement, making both the count of three and the relationship between the elements visible.
Etymology
triadGreekgroup of three

Greek trias named both the number three and a group of three. The English sense preserves the grouping idea: three related elements treated as a unit.

In context

Numerologypedia144:00
triple fours are the sacred triad which adds up to 12 and reduces to three
Numerology For Beginners: Numerology Explained Step By Step [Divided in Chapters]

More examples

  • The composer used a major triad.
  • These three principles make up the central triad.
  • Several triads of related terms appeared in the lesson.

Forms

triad · triads

Similar words

trio
Usually three people or performers rather than abstract elements.
trinity
Trinity often implies a closely unified set or a religious concept.